1. Home
  2. Directory
  3. Massachusetts
  4. Cambridge
  5. Social Worker
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

KATHLEEN LEAHY LICSW
NPI 1912070640
Social Worker - Clinical in Cambridge, MA

Active since November 17, 2006PECOS Enrolled
330 MOUNT AUBURN ST, CLARK 1, CAMBRIDGE, MA 02138(617) 499-5054(617) 499-5465 Get Directions Write a Review

NPPES record last updated: October 11, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 11, 2026, Oct 4, 2026 (2 updates tracked since 2026).

About Kathleen Leahy Licsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KATHLEEN LEAHY LICSW (NPI 1912070640) is an individual clinical provider in Cambridge, Massachusetts, licensed in Massachusetts (102932) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1912070640
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameKATHLEEN LEAHYCredential: LICSW
Location Address330 MOUNT AUBURN ST, CLARK 1Cambridge, MA 02138-5502
Mailing Address330 Mount Auburn St, Clark 1Cambridge, MA 02138-5502 · (617) 499-5054 · Fax (617) 499-5465
Phone(617) 499-5054
Fax(617) 499-5465
Sole ProprietorNo
Enumeration DateNovember 17, 2006
Last NPPES UpdateOctober 11, 20262 updates tracked since enumeration
✔ NPI 1912070640 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in MA · 102932
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
330 MOUNT AUBURN ST, Cambridge, MA 02138
Open in Google Maps ↗

Other Identifiers 1

OtherP02029MA · Blue Cross

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kathleen Leahy Licsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Kathleen Leahy reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mount Auburn Hospital
0.1 mi
Psychiatric Unit
330 MOUNT AUBURN ST
Cambridge, MA 02138
  • Reassigned Medicare billing, Massachusetts enrollment
  • 44 clinicians in this Medicare group
NPI 1649254491 (617) 492-3500

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02138 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $63.72 – $189.86
Typical copayment $0.00 (range $15.93 – $47.46)
Most-billed visit code NA
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. MIGUEL ANGEL PAZ PA-C
Physician Assistant (Surgical)
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 499-3500
DR. ALAAELDIN AHMED MD
Student in an Organized Health Care Education/Training Program
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 492-3500
DR. JANE R. SHARP MD
Obstetrics & Gynecology
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 499-5151
DR. LAURA NEED MD
Pediatrics (Pediatric Cardiology)
330 MOUNT AUBURN ST, NEWBORN SERVICES
CAMBRIDGE, MA 02138
Middlesex County (617) 499-5595
DR. VALERIE PRONIO-STELLUTO MD
Internal Medicine
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 499-5140
DR. BENJAMIN KERMAN MD
Emergency Medicine
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 499-5025
ANAESTHESIA ASSOCIATES OF MASSACHUSETTS, PC
Anesthesiology
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 499-5075
PAVLINA CHRYSAFI
Student in an Organized Health Care Education/Training Program
330 MOUNT AUBURN ST
CAMBRIDGE, MA 02138
Middlesex County (617) 492-3500

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kathleen Leahy's NPI number?

The NPI number for Kathleen Leahy is 1912070640. It was assigned to this individual provider in the NPPES registry on November 17, 2006.

Where is Kathleen Leahy located?

Kathleen Leahy practices at 330 Mount Auburn St Clark 1, Cambridge, MA 02138. The listed phone number is (617) 499-5054.

What is Kathleen Leahy's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Kathleen Leahy enrolled in Medicare?

Yes. Kathleen Leahy is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Kathleen Leahy's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Leahy reassigns Medicare benefits to Mount Auburn Hospital (Cambridge, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Kathleen Leahy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Kathleen Leahy was last updated on October 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.